公开(公告)号：US6129015A

公开(公告)日：2000-10-10

申请号：US496234

申请日：1995-06-28

申请人： Craig D. Dewey

发明人： Craig D. Dewey

IPC分类号： B41F13/12 ,  B41M1/14 ,  B41M1/18 ,  B41F5/16 ,  B41F21/12 ,  B41L1/02

CPC分类号： B41F13/12 ,  B41M1/14 ,  B41M1/18

摘要： A method and apparatus for determining color registration in a multi-color printing press having a plurality of printing stations. A process black registration mark is formed in an identified area by positioning a plurality of color registration marks on top of each other. The process black registration mark is position in a portion of the image that is intended to be printed black, and preferably adjacent to a black ink image. The identified area is examined to determine whether the process black registration mark is properly positioned.

摘要翻译： 一种用于在具有多个印刷台的多色印刷机中确定颜色配准的方法和设备。 通过将多个颜色对准标记定位在彼此的顶部上，在识别的区域中形成处理黑色对准标记。 处理黑色对准标记位于要打印黑色的图像的一部分中，并且优选地与黑色墨水图像相邻。 检查识别的区域以确定过程黑色对准标记是否正确定位。

公开(公告)号：US5027049A

公开(公告)日：1991-06-25

申请号：US304390

申请日：1989-01-31

申请人： Richard L. Pratt ,  Craig D. Dewey

发明人： Richard L. Pratt ,  Craig D. Dewey

IPC分类号： H02P27/06

CPC分类号： H02P27/06

摘要： A motor control method is disclosed in which a drive motor is connected to an adjustable frequency power supply in which the frequency of the power supplied to the motor can be selectively varied. While the motor is running at a constant speed as determined by the frequency of the power supplied to the motor, the value of the current being supplied to the motor by the power supply is sensed and an actual current signal representative of said actual current value is produced. A reference current signal which is representative of a selected maximum current value and thereby a maximum load at which the motor speed may be increased is also provided. The actual current signal is compared with the reference current signal and if the former is less than or equal to the latter, an output signal is provided. In response to the output signal resulting from the comparison, the value of the actual frequency of the power supplied to the motor is increased to a preselected value so that the motor speed also increases. The acceleration rate of the motor while its speed is increasing may also be changed.

摘要翻译： 公开了一种马达控制方法，其中驱动马达连接到可以选择性地改变提供给马达的功率频率的可变频电源。 当马达以由供给马达的功率的频率确定的恒定速度运行时，检测由电源提供给马达的电流值，代表所述实际电流值的实际电流信号是 生产。 还提供了表示所选择的最大电流值，从而代表电动机速度可能增加的最大负载的参考电流信号。 将实际电流信号与参考电流信号进行比较，如果前者小于或等于后者，则提供输出信号。 响应于比较产生的输出信号，提供给电动机的功率的实际频率的值增加到预选值，使得电动机速度也增加。 电机的速度增加时的加速度也可能发生变化。

公开(公告)号：US4161144A

公开(公告)日：1979-07-17

申请号：US881524

申请日：1978-02-27

申请人： Indulis E. Raugulis ,  Craig D. Dewey ,  Richard H. Gundrum

发明人： Indulis E. Raugulis ,  Craig D. Dewey ,  Richard H. Gundrum

IPC分类号： B66C9/10 ,  B61F7/00

CPC分类号： B66C9/10

摘要： An overhead travelling crane for a structure subject to oscillations resulting from earthquake shocks, comprises a bridge having flanged main wheels at opposite ends which are supported on a circular runway rail attached to the structure. Restraint means are provided between each end of the crane bridge and the structure to damp or control horizontal shifting of the crane relative to the structure resulting from horizontal oscillations of the structure to thereby prevent damage to the flanged main wheels and runway rail and crane derailment. The restraint means comprise a pair of shock absorber assemblies, one mounted at each end of the crane bridge, which are in constant resilient engagement with the sides of the structure and prevent a gap or space from occurring which would allow for excessive accelerated movement of the crane bridge. Each shock absorber assembly comprises a support bracket connected to the bridge, a pair of snubber wheel support plates pivotally mounted on the support bracket, a pair of rotatable snubber wheels, one mounted on each wheel support plate, and rotatably engaged with the structure (or a guide rail) thereon, biasing means connected between the snubber wheel support plates for urging the snubber wheels toward the structure, and a shock absorber connected between the snubber wheel support plates for controlling or damping movement of the snubber wheels away from the structure.

摘要翻译： 一种用于遭受震动震荡的结构的架空起重机，包括一桥接件，该桥架在相对两端具有凸缘的主轮，该桥被支撑在连接到结构上的圆形跑道导轨上。 在起重机桥的每个端部和结构之间设置有限制装置，以阻止或控制起重机相对于由结构的水平振动引起的结构的水平移动，从而防止对带凸缘的主轮和跑道轨道以及起重机脱轨的损坏。 约束装置包括一对减震器组件，一个安装在起重机桥的每个端部处，其与结构的侧面保持恒定的弹性接合，并且防止发生间隙或空间，这将允许过度加速的运动 起重桥。 每个减震器组件包括连接到桥的支撑托架，枢转地安装在支撑托架上的一对缓冲轮支撑板，一对可旋转的缓冲轮，一个安装在每个车轮支撑板上，并与该结构（或 引导轨道），连接在缓冲轮支撑板之间以用于将缓冲轮推向结构的偏置装置，以及连接在缓冲轮支撑板之间的减震器，用于控制或阻止缓冲轮远离结构的运动。